I often hike with my D7. When I'm going on a trail I don't know, I am
happy to take along my Garmin eTrex. But when I am on a familiar trail,
I would rather have a small battery powered GPS that doesn't need a
display, and simply anchor it to the top of my pack.
I'm thinking about something like the new Deluo units ... but with a
built in battery, or at least able to be powered from a AA or two.
Does such a thing exist? Seems like the common Li-ion batteries from
cell phones would be a very good match.
73 de chris K6DBG